ConfigureSharedLogger had no production caller, so the pool's only
diagnostics (first-wins options conflicts, scheduler/close failures)
went to NullLogger. DriverFactoryBootstrap now configures it from the
driver registry factory and from the AbCip/AbLegacy probe factories
(admin-only nodes reach the pool only through Test Connect). Wiring tests
reset the pool to a null logger first, so removing the call goes red
(verified).
Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
The old AdminUI cannot author the per-driver transport key (#576), so the
'pin before upgrading' recipe had no working path. A node-level appsetting
(env Drivers__AbCip__DefaultTransport) now supplies the default for AbCip
drivers with no key: explicit key > node default > compiled Native. Bound
and validated unconditionally (bad value fails host start); the driver
factory and the Test Connect probe both read it so they agree. AbCip.md
upgrade recipe rewritten around the key; Configuration.md documents it.
Also documents first-wins for AllowPacking/probe and host-alias throttles
(final review M6) and moves the status-bit note out of AbCip.md (M5).
Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
Joseph Doherty